Waterproof non-corrodible paper conduit.



B. C. VAUGHN. WATERPROOF NON-CORBODIBLE PAPER CONDUIT.

APPLICATION FILED DEC. 10, 1915.

Patented Apr. 25,1916.

wwm

THE COLUMBIA PLANOUMPH c 0., WASHINGTON. D- c.

BERT C. VAUGHN, 01E BROOKLYN, NEW YORK.

WATERPROOF NON-CORRODIBLE PAPER CONDUIT.

Application filed December 10, 1915.

To all whom it may concern Be it known that I, BERT C. VAUGHN, a citizenof the United States, and a resident of the city of Brooklyn, in thecounty of Kings, State of New York, have invented certain new and usefulImprovements in Waterproof Non-Corrodible Paper Gonduits, of which thefollowing is a specification.

This invention relates" broadly to paper manufactures and moreparticularly to the manufacture of paper tubes or conduits.

The principal object of this invention is to produce an inexpensive tubeadapted particularly for carrying water impregnated with corrosivesalts.

Another object of the present invention is the production of a paperconduit treated with inert material to render said conduit waterproofand to prevent the paper fiber from being attacked by any activechemical in the water being conducted through the tube.

Another object of the present invention is the production of aninexpensive conduit to carry acid waters out of mines and so forth, saidconduit being characterized by a tube having a paper stock body with theparts cemented together with an asphalt compound and the exterior of thetube being reinforced by wires completely embedded and covered in anexterior coating of asphalt.

A still further object of the present invention is a tube formed ofsuperimposed layers of paper stock spirally wound and cemented togetherwith intermediate layers of asphalt compound and reinforced on itsexterior with a spirally wound wire entirely embedded in an exteriorcoating of inert material, for example, asphalt.

Other and further objects of the present invention will in part beobvious and will in part be pointed out hereinafter by reference to theaccompanying drawings wherein like characters are used to designate likeparts throughout the several views thereof.

Figure 1 is a perspective view illustrating a section of the paper tube.Fig. 2 is a transverse detail view through a small section of the wallof theipaper tube. Fig. 3

Specification of Letters Patent.

Patented Apr. 25, 1916.

Serial No. 66,225.

is a plan view illustrating one method of securing the terminals of thereinforcing wire adjacent the ends of the tube. Fig.4 is a side view ofthe construction shown in Fig. 3. Fig. 5 illustrates a pluralityofsections of tubes secured together to form a line of conduit.

Difiiculty has been encountered in providing means for removing waterwhich accumulates in mines wherein the water is impregnated withcorrosive salts. Where iron piping has been used it is found to quicklycorrode and be destroyed, so that such iron piping has been found to beimpractical for this purpose. Lead pipes have been used but these areexpensive and are also liable to corrosion, particularly where the wateris impregnated with carbonates or phosphates.

Even wooden pipes have been utilized, but temperature changes and thenatural grain of the wood have a tendency eventually to split suchpipes, and furthermore, the porosity of the wooden pipes renders thismaterial unsuitable for this work, and also it is substantiallyimpossible to secure the wooden pipes of suflicient diameter withoutbuilding up the conduits in the form of stays, which is expensive.

It has been found that the difliculties outlined in the precedingparagraphs are overcome by utilizing properly constructed paper bodytubes, and to this end the present invention is particularly directed.The invention which will hereinafter be described in detail comprisesbroadly a built up paper tube including superimposed spirally woundlayers of heavy asphalted tough paper, wherein the superimposed layersare cemented together by layers of asphalt. The

tube as built up is successively subjected to pressure so that eachadditional layer of asphalt and paper is continuously compressed asthelayer is being applied. This produces a very dense walled tube. As theouter layer of paper is applied reinforcing wires are applied andsecured at the terminus upon themselves in such manner as to effectuallybind and reinforce the tube throughout its length. The completed tube isdipped in. an asphalt compound thereby providing an additional coatingof asphalt both on the exterior and interior of the finished tube. Theexterior coating completely covers the reinforcing wires so that anycorrosive salts that may be in the water do not come in contact with thesaid wires. Many types of connecting members may be utilized, butpreferably I prefer to connect the sections of the conduits together bymeans of slightly larger short sections of conduits secured over one endof the sections of the tube.

Referring now more particularly to the drawings the tube 1 illustratedin Fig. 1 comprises a section of built up paper conduit of large sizepreferably of 10 inches or larger in diameter wherein the tube is ofuniform diameter and composed of superimposed layers of paper 2. Theselayers of paper are cemented together as at f by layers of asphalt. Areinforcing wire 5 extends spirally on the outside and is secured at itsends as at 6. Various methods of securing may be used and one simpleform of securing means is illustrated in Figs. 3 and 4. The spirallydirected wire 5 is turned upon itself as at 7 to pass around the tube ina direction substantially at right angles to the axis of the tubethereby forming an end hoop 8. The terminus of the end hoop 8 may bebrought over (as at 9) the spirally directed portion 5, and then underthe raised portion 7 and formed into the loop 10. This constructionsecurely fastens the wire upon itself and effectively anchors the wireto the tube. The tube after being wired is dipped in a bath of asphaltwhich entirely covers the interior as at 11 and also coats the exterioras at 12 with a heavy coating of asphalt, which entirely embeds andcovers the reinforcing wires.

Various connectors may be used but in the present form I haveillustrated a connector comprising a section of a tube formed inidentically the same manner as previously described tube with theexception of the reinforcing wires. This large section preferably isslipped over the end of the pipe and is cemented thereto by means ofasphalt cement, while the asphalt cement is unset a binding wire as at14: may be applied over the junction of the large or union pipe,

thus effectually anchoring the connector to the conduit section.Preferably the connector section or end section is applied and securedbefore the entire section is given the dip in the asphalt bath whichcoats the exterior and interior of the tube as above specified.

In the assembly of sections of tubes to form a continuous conduit'thefree end of one tube is heavily coated with asphalt compound andis'slipped within the large connector section of the ildJiICGlll; tubeand se cured by means of binding wires or otherwise, thereby forming acontinuous conduit.

From the above it will be noted that the various sections of built uptubes are ontirely protected and coated with asphalt compound which isinert to corrosive salts and that the continuous conduit comprisessubstantially a continuous pipe having an exterior and interior coatingof asphalt.

Realizing that it is possible to vary the physicalembodiments of myinvention I desire the specific structure shown to be 0011- sidered asillustrative and not in the limiting sense.

Having thus described my invention what I desire to claim is 1. As anarticle of manufacture, a section of water-proof non-corrodible conduit,including a relatively large tube having body walls of substantiallyuniform thickness, said body walls being formed of compressedsuperimposed alternate layers of heavy paper stock and asphalt, saidlayers of paper stock being spirally wound and cemented together withlayers of asphalt forming substantially continuous cylinders between thesaid layers of the spirally wound paper, reinforcing means on theexterior of said body walls and secured to said section adjacent eachend thereof by means including substantially circumferential hoops, anenlarged member at one end of said section and fixedly secured theretoto enable a plurality of sections to be joined together to form acontinuous conduit, and layers of asphalt completely covering both theinterior and exterior of said section.

2. As an article of manufacture, a section of water-proof non-corrodibleconduit, including a relatively large tube having body walls formed ofcompressed superimposed alternate layers of heavy paper stock andwater-proof cementitious material, said layers of paper stock beingspirally wound over the layers of the cementitious material in suchmanner that said cementitious material comprises substantiallycontinuous cylinders intermediate the layers of paper, reinforcingmeans'on the exterior of the body wall and secured to said sectionadjacent each end thereof, an enlarged member at one end of said sectionand constructed to receive an end of an adjacent section to enable aplurality of said sections to be joined together to form a continuousconduit, and an inert water-proof coating completely covering saidreinforcing means and both the interior and the exterior of saidsection.

3. As an article of manufacture, a section of water-proof non-corrodibleconduit, including a relatively large tube having body walls ofsubstantially uniform thickness,

= the paper stock, each layer of asphalt being seamless and formingsubstantially a continuous cylinder so that the body Wall of said tubeconsists in spiral layers of seamed paper in alternation With continuousseamless cylinders of asphalt, and continuous asphalt coatings on boththe interior and exterior of the section.

BERT C. VAUGHN.

In presence of--- ROBERT R. DANZILO.

Uopies of this patent may be obtained for five cents each, by addressingthe Commissioner of l 'atenta,

Washington, D. G.

